MapEmitter<K, V> class

A ChangeEmitter implementation of a map. Modifying a MapEmitter won't automatically emit a change. To emit a change after it has been modified, call emit.

Inheritance
Mixed in types

Constructors

MapEmitter(Map<K, V> map, {bool emitDetailedChanges = false})

Properties

changes → Stream<MapChange<K, V>>
The stream of Changes to notify your UI or other state elements that they should update.
no setterinherited
emitDetailedChanges → bool
Whether to emit changes that include detailed information about the specific change. Defaults to false which will emit the same cached change object to minimize garbage collection.
final
entries → Iterable<MapEntry<K, V>>
The map entries of this.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
isDisposed → bool
Whether this has been disposed.
no setterinherited
isEmpty → bool
Whether there is no key/value pair in the map.
no setterinherited
isNotEmpty → bool
Whether there is at least one key/value pair in the map.
no setterinherited
keys → Iterable<K>
The keys of this.
no setteroverride
length → int
The number of key/value pairs in the map.
no setterinherited
parent → ChangeEmitter<Change>?
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
values → Iterable<V>
The values of this.
no setterinherited

Methods

addAll(Map<K, V> other) → void
Adds all key/value pairs of other to this map.
inherited
addChangeToStream(MapChange<K, V> change) → void
Used by subclasses to broadcast Changes.
inherited
addEntries(Iterable<MapEntry<K, V>> newEntries) → void
Adds all key/value pairs of newEntries to this map.
inherited
cast<RK, RV>() → Map<RK, RV>
Provides a view of this map as having RK keys and RV instances, if necessary.
inherited
clear() → void
Removes all pairs from the map.
override
containsKey(Object? key) → bool
Whether this map contains the given key.
inherited
containsValue(Object? value) → bool
Whether this map contains the given value.
inherited
didRegisterParent() → void
Will be called after parent is set and the ancestor tree is available.
inherited
dispose() → void
Disposes resources and closes the stream controller.
inherited
emit({bool quiet = false}) → dynamic
Emits a change if the map has been modified since the last emit (or since it was initialized).
findAncestorOfExactType<T extends ChangeEmitter<Change>>() → T?
inherited
forEach(void action(K key, V value)) → void
Applies action to each key/value pair of the map.
inherited
map<K2, V2>(MapEntry<K2, V2> transform(K key, V value)) → Map<K2, V2>
Returns a new map where all entries of this map are transformed by the given convert function.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
putIfAbsent(K key, V ifAbsent()) → V
Look up the value of key, or add a new entry if it isn't there.
inherited
remove(Object? key) → V?
Removes key and its associated value, if present, from the map.
override
removeWhere(bool test(K key, V value)) → void
Removes all entries of this map that satisfy the given test.
inherited
toString() → String
A string representation of this object.
inherited
update(K key, V update(V value), {V ifAbsent()?}) → V
Updates the value for the provided key.
inherited
updateAll(V update(K key, V value)) → void
Updates all values.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator [](Object? key) → V?
The value for the given key, or null if key is not in the map.
override
operator []=(K key, V value) → void
Associates the key with the given value.
override